X0306 4 2020-07-14 0 0001787400 Nkarta, Inc. NKTK 0001629794 New Enterprise Associates 15, L.P. 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 0001640031 NEA Partners 15, L.P. 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 0001640033 NEA 15 GP, LLC 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 Common Stock 2020-07-14 4 C 0 522639 A 522639 D Common Stock 2020-07-14 4 C 0 1712810 A 2235449 D Common Stock 2020-07-14 4 P 0 666666 18.00 A 2902115 D Series A Preferred Stock 2020-07-14 4 C 0 522639 0.00 D Common Stock 522639 0 D Series B Preferred Stock 2020-07-14 4 C 0 1712810 0.00 D Common Stock 1712810 0 D On July 14, 2020, the Series A Preferred Stock converted into Common Stock on a 3.7-for-1 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. The shares are directly held by New Enterprise Associates 15, L.P. ("NEA 15"), and indirectly held by NEA Partners 15, L.P. ("NEA Partners 15"), the sole general partner of NEA 15, NEA 15 GP, LLC ("NEA 15 GP"), the sole general partner of NEA Partners 15, and the individual managers of NEA 15 GP (NEA Partners 15, NEA 15 GP and the individual managers of NEA 15 GP, together, the "Indirect Reporting Persons"). The individual managers of NEA 15 GP are Forest Baskett, Anthony A. Florence, Jr., Mohamad Makhzoumi, Josh Makower, Scott D. Sandell and Peter W. Sonsini. The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 15 shares in which the Indirect Reporting Persons have no pecuniary interest. On July 14, 2020, the Series B Preferred Stock converted into Common Stock on a 3.7-for-1 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series B Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. /s/ Sasha Keough, attorney-in-fact 2020-07-16